Cap stacking structure of nail gun

ABSTRACT

A cap stacking structure comprises a plurality of caps. Each cap has at least one axial ribs for stacking the plurality of caps together so that the plurality of caps are stacked along an axial line passing through an axial center of each cap; and gaps between two adjacent caps have a predetermined length. Each rib is extended from a periphery of each cap. One side of each cap is formed with a protruding round end and another side of each cap is formed with a groove having a shape with respect to the protruding round end. Thereby, the plurality of caps are stacked by the coupling of the protruding round end and groove.

FIELD OF THE INVENTION

[0001] The present invention relates caps of nail guns, and particularlyto a cap stacking structure.

BACKGROUND OF THE INVENTION

[0002] In the pneumatic nail gun, caps are pushed to a beating positionautomatically so that the caps can be beaten continuously to an object.The prior arts, U.S. Pat. No. 5,947,362 and U.S. Pat. No. 6,145,725,disclosed nail guns with above said function. In these prior arts, thecaps are stacked horizontally and coaxially and then the caps are placedin a cap case. Then the cap case is installed on a guide track. Sincethe caps are installed horizontally so that gaps between caps are largerso that only a few caps are contained in the guide track. As a result,the cap case must be enlarged so that the volume of the nail gun isincreased. As a consequence, the operation is inconvenient.

[0003] Moreover, in another prior art, a vertical cap collectingcylinder is developed. In this prior art, a plurality of caps can beplaced in the cylinder. The caps can be outputted from one opening ofthe cylinder for being beaten. This prior art is beneficial for reducingthe volume and the user can hold it easily. However, in this prior art,the caps are irregularly placed in the case one by one so that theoperation for filling the caps is inconveniently.

[0004] Thereby, these prior arts can not resolve the problems ofincreasing volumes for receiving caps and difficulty in operation.

SUMMARY OF THE INVENTION

[0005] Accordingly, the primary object of the present invention is toprovide a cap stacking structure which comprises a plurality of caps.Each cap has at least one axial ribs for stacking the plurality of capstogether so that the plurality of caps are stacked along an axial linepassing through an axial center of each cap; and gaps between twoadjacent caps have a predetermined length. Each rib is extended from aperiphery of each cap. One side of each cap is formed with a protrudinground end and another side of each cap is formed with a groove having ashape with respect to the protruding round end so that the plurality ofcaps are stacked by the coupling of the protruding round end and groove.

[0006] The various objects and advantages of the present invention willbe more readily understood from the following detailed description whenread in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007]FIG. 1 is a perspective view about the first embodiment of the capset of the present invention.

[0008]FIG. 2 is an elevational view of the cap set shown in FIG. 1.

[0009]FIG. 3 is a partial schematic view about the cap set of FIG. 1 ofthe present invention.

[0010]FIG. 3 is a partial schematic cross sectional view along 3-3 ofFIG. 1.

[0011]FIG. 3A is a partial cross sectional view about the cap set ofFIG. 3.

[0012]FIG. 3B is a schematic cross sectional view along 3B-3B of FIG.3A.

[0013]FIG. 4 is a perspective view about the second embodiment of thepresent invention.

[0014]FIG. 5 is an elevational view of the cap set of FIG. 4.

[0015]FIG. 6 is a partial schematic cross sectional view along 6-6 ofFIG. 5.

[0016]FIG. 6A is a partial cross sectional view of the cap set from FIG.6.

[0017]FIG. 6B is a cross sectional view of cap set from FIG. 6.

[0018]FIG. 7 is a schematic view showing that the first cap set isfilled in a horizontal cap case.

[0019]FIG. 8 is a schematic view showing that the first cap set isfilled in an inclined cap case. FIG. 9 is a schematic view showing thatthe second cap set is filled in a horizontal cap case.

[0020]FIG. 10 is a schematic view showing that the second cap set isfilled in an inclined cap case.

[0021]FIG. 11 is a schematic view showing that the second cap set isfilled in a cylindrical cap case according to the present invention.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Referring to FIG. 1, a perspective view about a preferredembodiment of the cap stacking structure is illustrated. The cap set 1is formed by a plurality of caps 11. Each cap 11 may have a round shapeor other geometry shape. The periphery of each cap 11 is extended with aplurality of rib ends 12 (referring to FIG. 2). By the rib ends 12 toconnect the cap 11 with the cap 10, a plurality of caps 11 are connectedas a cap set 1.

[0023] By the rib ends 12 of the caps 11, the caps 11 are staked along acoaxial axis 14 (referring to FIG. 3). The adjacent cap 11 and cap 10 isformed with a gap of h0 so that the whole cap set 1 is filled in the capcase (will be described hereinafter) of a nail gun, Thereby, the caps 11can be guided precisely.

[0024] In another embodiment of the present invention, the cap 101 ofthe cap set 100 can be made with a shape of a rectangular cover withcambered corners (referring to FIGS. 3A and 3B). The axial rib ends 103are used to connect the cap 101 with the cap 102. The plurality of ribends 103 are arranged around the periphery of the cap 101 so that thecaps 104 are stacked along the same axial line 104 with a gaptherebetween so as to form a cap set 100.

[0025] Other than above embodiment, FIGS. 4 to 6 shows another way forstacking the caps. In this embodiment, a plurality of caps 21 areserially connected as a cap set 2 (referring to FIG. 4). Each cap 21 hasa shape of a round cover or other cover shape. A center of a bottom ofeach cap 21 is formed with a protruding round end 22 (referring to FIG.6). A top center of each cap 21 is formed with a groove 23 correspondingto the protruding round end 22. Then by the coupling of the protrudinground end 22 with the groove 23, two adjacent caps 21 are assembledtogether so as to form a cap set 2.

[0026] To use the groove 23 effectively, the depth of the groove 23 canbe increased by forming an annular rib 29 along an opening of the groove23 (referring to FIG. 6A) so as to increase the stability of the caps21.

[0027] In another design, a top center of each cap 28 is protruded witha protruded round end 25 (referring to FIG. 6B). A bottom center of eachcap 28 is formed with a groove 26. Thereby, by the coupling of the roundends 25 and the grooves 26, adjacent caps 28 are serially connected as acap set. Moreover, an annular rib 29 can be formed at the periphery ofthe opening of the groove 26 of the bottom of the cap 28.

[0028] Moreover, in this embodiment, a plurality of caps 28 are stackedalong an axial line 24 and edges of two adjacent caps 28 are formed agap h1 (referring to FIGS. 6, 6A and 6B). Thus the whole cap set 2 arefilled in the cap case (will be described hereinafter) so as to guidethe cap precisely and smoothly.

[0029] In the embodiment illustrated in FIGS. 4 to 6, the groove 23 canbe formed with a through hole 27 at a bottom of the groove so that aplurality of caps can be serially connected by a tie device passingthrough the through holes of all the caps in the cap set.

[0030] Referring to FIGS. 7 and 8, a horizontal cap case 4 (shows inFIG. 7) and an inclined cap case (shows in FIG. 8) for filling the capset 1 or 2 are illustrated. The cap case can be used to fill the cap set1 or 2.

[0031] When the cap set 1 or 100 of the rib ends 12 or 103 of thepresent invention are filled into the horizontal cap case 4 (referringto FIG. 6) or inclined cap case (referring to FIG. 7), for example, fora cap set 1 with the rib end 12, a cutter 42 is embedded into the gap h0between the cap 11 and cap 10 (referring to FIG. 3) for cutting the ribend 12. Thereby, each cap 11 can be transferred by pliers 43 and then toa beating opening 61 of the nail gun 60. The gap h0 has a further effectof receiving the cutter 43 and guiding the cap 11 precisely.

[0032] When the cap set 2 of the present invention having the protrudinground end 22 and the groove 23 is filled in the horizontal cap case 4(referring to FIG. 9) or the inclined cap case 40 (referring to FIG.10), a rod 44 can be installed at a cap outlet 41 of the casing, whenthe cap is beaten, the rod will move the cap 21 to the beating opening61 of the nail gun 60. The gap h1 has the function of embedding the rod44 and guiding the cap 21 (referring to FIG. 6).

[0033] The cap set 2 with the protruding round end 22 and groove 23 canbe filled to a cylindrical cap case 5 (referring to FIG. 11). When thenail beat rod operates, a claw or teeth device 52 at an opening 51 ofthe cap case 5 is embedded into the gap h1 between the cap 21 and thecap 20 (referring to FIG. 6) so as to release the cap 21. Then a pushplate 53 at the opening of the cap case pushes the cap 21 to the beatingopening 63 of the nail gun 62.

[0034] The scope of the present invention is at the configuration of thecap instead of the application of the cap case. Moreover, the way forguiding the caps is not used to confine the scope of the presentinvention.

[0035] The gaps h0 and h1 have the effects of guiding the cap set sothat the nail can be guide precisely. Since a plurality of caps arestacked along an axial center of the cap set, the cap set 1 can beplaced in the cap case easily and conveniently.

[0036] The arrangement for stacking the caps is beneficial to collect aplurality of caps within one cap case so that only one cap set isnecessary to be placed in the cap case. Thereby, the caps can be beatencontinuously.

[0037] The present invention is thus described, it will be obvious thatthe same may be varied in many ways. Such variations are not to beregarded as a departure from the spirit and scope of the presentinvention, and all such modifications as would be obvious to one skilledin the art are intended to be included within the scope of the followingclaims.

What is claimed is:
 1. A cap stacking structure comprising a pluralityof caps, each cap having at least one axial rib for stacking theplurality of caps together so that the plurality of caps are stackedalong an axial line passing through an axial center of each cap; andgaps between two adjacent caps having a predetermined length.
 2. The capstacking structure as claimed in claim 1, wherein each rib is extendedfrom a periphery of each cap.
 3. The cap stacking structure as claimedin claim 1, wherein a bottom center of each cap is formed with aprotruding round end and a top center of each cap is formed with agroove having a shape with respect to the protruding round end so thatthe plurality of caps are stacked by the coupling of the protrudinground end and the groove.
 4. The cap stacking structure as claimed inclaim 3, wherein an annular protruding edge is protruded from an openingof the groove of each cap.
 5. The cap stacking structure as claimed inclaim 1, wherein a top center of each cap is formed with a protrudinground end and a bottom center of each cap is formed with a groove havinga shape with respect to the protruding round end so that the pluralityof caps are stacked by the coupling of the protruding round end and thegroove.
 6. The cap stacking structure as claimed in claim 5, wherein anannular protruding edge is protruded from an opening of the groove ofeach cap.
 7. The cap stacking structure as claimed in claim 1, wherein athrough hole is formed at a center of each cap.